Introducing CAN SLIM: O'Neil's Seven-Point Checklist
The origin of the system — a historical study of the market's biggest winners, and the seven-letter acronym O'Neil built from what they had in common.
O'Neil built CAN SLIM from an explicitly empirical starting point: rather than starting with a theory of what should predict a great stock, he and his team studied the market's biggest historical winners going back decades, examining their fundamental and technical characteristics in the period shortly before their major price advances, looking for traits that recurred across a large sample rather than a single, theoretically appealing story.
The result is a seven-part checklist, each letter standing for a specific, checkable criterion: Current quarterly earnings, Annual earnings growth, New products/management/highs, Supply and demand, Leader or laggard, Institutional sponsorship, and Market direction — covered across this course in that same order, building from an individual stock's own fundamentals outward to the broader market environment.
CAN SLIM's starting point — study what actually happened historically, then build criteria from the pattern — is methodologically distinct from the value-investing courses elsewhere in this Book Club, which start from a theory of intrinsic value and work forward. Both are legitimate, evidence-respecting approaches, but O'Neil's specifically claims empirical support from a large historical sample of big winners, rather than deriving its criteria from first-principles reasoning about business value.
- CAN SLIM was built from a historical study of the stock market's biggest winners, looking for traits they shared before their major price moves, rather than starting from a theoretical model.
- The seven-letter checklist covers a stock's own earnings and technical characteristics first, then broadens outward to industry leadership, institutional buying, and finally the overall market's direction.
- This course follows the checklist in order, chapter by chapter, building toward O'Neil's final and — in his own account — most important criterion: the overall market's trend.